Are friends overrated? A study for the social news aggregator Digg.com

@article{Doerr2012AreFO,
  title={Are friends overrated? A study for the social news aggregator Digg.com},
  author={Christian Doerr and Norbert Blenn and Siyu Tang and Piet Van Mieghem},
  journal={ArXiv},
  year={2012},
  volume={abs/1304.2974}
}
The key feature of online social networks (OSN) is the ability of users to become active, make friends and interact via comments, videos or messages with those around them. This social interaction is typically perceived as critical to the proper functioning of these platforms; therefore, a significant share of OSN research in the recent past has investigated the characteristics and importance of these social links, studying the networks' friendship relations through their topological properties… 
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Are Friends Overrated? A Study for the Social Aggregator Digg.com
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Results from a multi-year study of the online social network Digg.com are presented, indicating that the importance of friends and the friend network in the propagation of information is less than originally perceived.
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Connected: The Surprising Power of Our Social Networks and How They Shape Our Lives - How Your Friends' Friends' Friends Affect Everything You Feel, Think, and Do
CONNECTED: THE SURPRISING POWER OF OUR SOCIAL NETWORKS AND HOW THEY SHAPE OUR LIVES - HOW YOUR FRIENDS' FRIENDS' FRIENDS AFFECT EVERYTHING YOU FEEL, THINK, AND DO by Nicholas Christakis and James
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